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I (No Model.) 4 Sheets-Sh eet 1. W. A. WHEELER. MACHINE FOR FORMINGGIRGUMFERENTIALURIMPS IN SHEET METAL PIPES.

Patented Mar. 14,1882.

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N. PETERS. Phnlo-Lflhognphur, Walhingcn, D4 6.

(No Model.)

4 Sheets-Sheet. 2.

W. A. WHEELER. CHINE FOR FORMING OIRGUMPERENTIAL GRIMPS INSHEET METALPIPES.

,890. Patented Mar. 14,1882.

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(N0 Mode l.) 4 sneetb-snet s. W. A. WHEELER. MACHINE FOR FORMINGOIRGUMPERENTIALOEIMPS IN SHEET METAL I PIPES.

Patented Mar. 14,1882.

IJV'VENTOR.

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(No Model.) H 4 Sheefs-Sheet 4.

' W. A. WHEELER.

MACHINE FOR FORMING OIRGUMPERENTIAL CRIMES IN SHEET METAL PIPES No.254,890. 'Patelited Max:1 1, 1882.

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. ters Patent No. 221,974were fication.

UNITED STATES PATENT OFFICE.

WILLIAM A. \VHEELER, OF INDIANAPQLIS, INDIANA.

MACHINE FOR FORMING CIRCUMFERENTIAL CRIMPS IN SHEET-METAL PIPES.

SPECIFICATION forming part of Letters Patent No. 254,890, dated March14, 1882. Application filed November 14, 1881. (No model.)

of the city of Indianapolis, county of Marion,

and State of Indiana, have invented certain new and useful Improvementsin Machines for Forming Circumferential Orimps in Sheet- Metal Pipes, ofwhich the following is a speci- My saidinvention consists of a machinefor forming circumferential crimps in sheet-metal pipes; and it is insome particulars an improvement upon the invention for which Letgrantedme, hear ing date February 24, 1880.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters of reference indicate similar parts, Figure1 is a side elevation of a machine embodying my improvements, portionsof the frame-work being broken away to show the mechanism more clearly;Fig. 2,a vertical section thereof on the dotted line a a; Fig. 3, a topor plan view of the machine; Fig. 4, an underside plan of the'topportion of the machine as seen when looking hpwardly from the dottedline 21 c,- Fig. 5, a top or plan view of the central portioncontaining'the crimping-wheel's, the inside stationary rest for thepipe-section being removed; Fig. 6, a detail section on the dotted lineto w,- Fig. 7,a detail view as seen when looking to the left from thedotted line or m; Fig. 8, a detail view as seen when looking to the leftfrom the dotted line y y,- Fig. 9, a detail section on the dotted line a2,- Fig. 10, a plan view of those portions of the machine below thetable as seen when looking downwardly from the dotted line o o, and Fig.11 a front elevation of the bottom portion of the machine as seen whenlooking at the same from the dotted line at the left of Fig. 1.

in said drawings, the portions marked A, A,

A ,and B represent the framework of the machine; O, the table thereon;D, sliding clamps on said table; E, a circular disk underneath saidtable, by which the sliding clamps are actuated; F, an inside clamp orrest for the pipe-section; G, an inside stationary rod on which theclamp F is secured; H. a hollow revolving shaftsurroundingthe rod G,andwhich operates a portion of the mechanism; I, a

drivingshaft which drives the shaftH through the block L up past theshaft bearing on the frame-work B, and which, as it rests closelyagainst said frame-work, between lugs thereon, is prevented from any buta vertical movement; N, a sleeve supported bythearmM upon the upperportion of the hollow shaft H,

which is adapted to be moved vertically bysaid arm, and which forms partof a toggle- -joint mechanism for expanding the revolving formers orcrimping-wheels; (),a circnlarhead secured to and revolving with theshaft H, which carries the crimping-wheels; P, the crimping-wheels orrevolving formers, which form the crimps in the section of pipe; and Q,a treadle by which a detent is released and the Working parts put inoperation.

Theframe A A A B is preferably composed of cast-iron parts boltedrigidly together. The parts A A serve as bridge-trees and carry thehearings in which the vertical shafts rest,

I as also the part B, which is in the form of a wing on said parts A AUpon the part B are the bearings for the horizontal shafts I J.

The table 0 rests directly upon the upper ends of the frame'parts A, andis rigidly secured thereto. It is provided with adjustable dovetailedslides, (composed of the parts 0 c and adjusting-screws 0 which passthrough bosses 0 as shown.) in which the clamps D move. Brackets (3 aresecured to the upper side thereof and sustain a ring, 0 upon which orprojecting points thereon the section of pipe rests when placed in themachine. These brackets are rendered adjustable by the adjustingscrews 0which operate as indicated most plainly in Fig.2.

The clamps D are each formed of two parts, as shown, one of which isadjustable on the other by means of adjusting-screws d, which passthrough bosses d upon one part and against the ends of or projectionsupon the other. I

The disk E rests inside a flange, c, which projects downwardly from theunder side of the table 0, and is capable of a rotary move ment thereinso far as the mechanism will permit. Slots 6, which are formed at anangle with the radii of the disk, are formed therein, down through whichproject studs 61 from the lower side of the clamps D. Thus when saiddisk is rotated said clamps are forced toward or from each other,according to the direction in which the disk is moved.

The inside clamp or rest, F, is secured to the top of the centralstationary rod, G. It serves as an inside rest for the section of pipewhile it is in the machine and being operated uponi Its lower edgeshould consist of steel sections,.which are secured to the upperorcastiron parts. By means of the inside threaded sleeve,f, and thecone-shaped nutf thereon, the sections f can be expanded as they wear bysimply turning said nut, and thus add greatly to the durability of theseheads F.

The rodGris held in place by being screwed into the stirrup (don theframe part A, and which practically forms a part thereof. It is adaptedto be adjusted up or down by being turned in said stirrup, and when inright position is prevented from moving therefrom by the lock-nut g,which is shown as having a handle for convenience.

The hollow shaft H rests and turns upon a sleeve, H in the frame part A,and is secured from rising out of its seat in said cylinder by a nut, hthereon. This shaft is adjustable vertically by means of the bell-cranklever H and its screw 7L the operation of which will be readilyunderstood by reference to Fig. 2.

The shaftI is an ordinary driving-shaft and runs in hearings on theframe part B. It bears the tight and loose pulleys 1 1 by which it isdriven, the spin-gear 1 and the bevel-gearl, or their equivalents. forthe purposes specified. The counter-shaft J also rests in bearings onthe frame part B. It carries the two camwheels J and J the loosecombined gear and clutch wheel J and the clutch part J As the wheel J isloose on this shaft, said shaft only revolves when the clutch is throwninto gear.

The construction and operation of the clutch J J are as follows:

The part J has projections j on its inner face, (see Fig. 2,) and thepart J has a springbolt, j, which engages therewith as the wheel Jrevolves, and thus rotates the shaft J. Pivoted to the outside of thepart J by the pivot j is the lever J which engages with a projectingstud,j ,on the spring-bolt wherebysaid spring-bolt can be withdrawn fromcontact with the studs j Pivoted to the frame partB by a pivot, I), is avibrating arm, B, which is operated by the treadleQan'd treadle-rod Q,and carries the detent b, which is or may be rendered ad justable bymeans of a setscrew, N.

This detent engages at all times with thelever J except when forced upby the action of the treadle, and thus holds the spring-boltj backoutofenga gement with the projections-j", thereby allowing the wheel Jto revolve loosely on the shaftJ and said shaft to remain motionless.When it'is desired to revolve the shaft J the detent is forced up outof'engagement with the lever by means of the treadle, the springboltflies forward into engagement, and the shaft is thus rotated. As for thepurposes of this invention it is only desirable that the shaft J shouldmake one revolution at a time, the detent is allowed to drop back intoplace immediately after being raised, and thus catches the lever as theparts arrive for the first time at the position from which they started,and disengages the clutch, thereby stopping the motion of the shaft andthe parts actuated thereby until such time as it is desired it shouldrevolve again, when the detent is again raised and the operationrepeated.

The vibrating lever K is provided with pivots k, which rest in bearingsprojecting from the frame part B, and is operated by the cam; wheel J onthe shaft J, as will be best understood by reference to Fig. 8. Thiscam-wheel has its flat side up when the shaft J is at rest, andtherefore the lever K occupies at most times a substantially verticalposition. The drawings, however, show the detent I) raised and the shaftstarting on its revolution. Gonsequently this lever, like the otherparts, is shown in operated position. The leveris con nected to the'diskE by a connecting-rod, K which is jointed to both, and to the formerpreferablyby a form of universal joint, as is shown most plainly in Fig.2, and when it is forced out of vertical position by the camwheel thusforces the disk E around a certain distance, and as before explained, bymeans of the angling slots 0 in said disk, closes in the clamps D uponthe srction of pipe which is being operated upon.

The sliding block or sleeve L is operated by the cam-wheel J on theshaft J, which comes in contact with the anti-friction truck L which issecured to said sleeve by the stud-shaft 1 Like the cam-wheel J, thiscam-wheel has its flat side up when the shaft ,J is at rest, andconsequently the sleeve Lremains at the lowest point of its movementwhile the detent b is engaged with the lever J The arm M is secured tothe sleeve L by means of the machine-screw m, and is or may be renderedadjustable by means of having the hole. through which said screw passeselongated, as shown, and providing an adjustingscrew, m. This arm isheld in position laterally by the projections to on the frame parts Abetween which projections it passes, and which serve as the sides of aslide therefor.

The sleeve N rests in a socket in the upper branch of the arm M, asshown, and is permitted to revolve freely therein, (with the shaft H, towhich it is secured by a spline,) while it is as freely permitted tomove vertically on said shaft. Uponthis sleeve arcvlips 'n, to which arepivoted arms n, which are jointed at their other ends to thelaterally-movable arms P which are rigidly connected to the shafts Pupon which are the arms P, upon which the crimping-wheels or formers 1are mounted. Thus an upward movement of the sleeve N (which, ashereinbet'ore explained, is caused by the cam-wheel L and the sleeve Land arnill/I) will force out the arms a, and

through them the arms P and P and the crimping-wheels P, which are thusenabled, as the whole device is continually rotating when the machine isin operation, to bear against the material of the section of pipe whichis at the time in the machine, and form a circumferential crimp near theend of said pipe, the shape and size of which are determined by theshape, size, and position of said crimpingwheels or formers.

The circular head 0 is secured rigidly to the hollow vertical shaft Hand revolves therewith. Its principal service is to carry thecrimping-wheels and the parts which are immediately connected therewith.Slots 0 are preferably formed therein, through which the bearin gswherein the wheels or formers P rest project, and by which the lateralmovement of the same is defined.

The crimping-wheels or revolving formers 1? rest in sockets p, which inturn rest in bearings in the arms P. Said wheels are capable ofrevolving independently of each other and of the shaft G, and are allrevolved about said shaft, as indicated. They are held back close to thecenter of the machine, when notexpand ed by the means described, by thesprings p, as shown in Figs. 4 and 6. Except in the means of beingoperated they are not dissimilar to those shown in my Patent No.224,974, before referred to, and in that are only different in employinga different form of togglejoint mechanism.

The treadle Q is for the purpose of enabling the operator to readilyoperate the detent b, as has been before explained. It is pivoted to adepending piece, a5, from the frame part A by a pivot, q, and has anupwardly-projecting rod, Q, attached thereto by the pivot g, whichextends up and is attached to the arm 13 by the pivot q".

The operation of my invention may be recapitulated as follows: A sectionof sheet-metal pipe is inserted in the machine, one end passing downbetween the inside clamp or rest, F, and the outside clamps, D. Thetreadle is then operated to disengage the detent b. The shaft I beingcontinually in motion during the operation of the machine, this puts theshaft J in motion, which, through the cam-wheel J, lever K, and disk E,throws the clamps D inwardly, firmly clasping the outside of the pipe.The same shaft, through the cam-wheel J sleeve L, arm M, sleeve N, andhead 0, containing the-toggle-joint mechanism, expands the revolvingformers or crimping-wheels P against the inside of the lower portion ofthe pipe-section, thus forming a circumferential crimp therein almostinstantaneously. As soon as the cam-wheels come around so that theirflat surfaces come in contact with the other parts against which theyare intended to operate, the crimping-wheels recede, thcjaws D open, andthe pipe-section is removed.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a machine for forming circumferential crimps in sheet-metal pipes,a driving-shaft, a counter-shaft, a loosely-running clutch-Wheelthereon, which is driven by a wheel on the first shaft, a clutch part onsaid counter-shaft, provided with a spring-bolt adapted to engage withthe clutch-wheel, a lever adapted to disengage said bolt, a detentadapted to operate said lever to effect and maintain such disengagementuntil purposely withdrawn from'contact with said lever,acam-wheel onsaid coun tershaft, a lever adapted to be operated by said cam-wheel,and a plate, E, adapted to be operated by said lever, said several partsoperating in combination with each other, substantially as set forth.

2. The combination, in a machine for forming circumferential crimpsinsheet-metal pipes, of a shaft adapted to rotate intermittently, having acam-wheel thereon, a vibrating lever operated by said cam-wheel, andadisk adapted to be partially rotated by said lever and connected withthe clamps D, which are thereby operated, substantially as set forth. 3.In a machine for forming circumferential crimps in sheet-metal pipes, adisk adapted to partially revolve, and which is provided with slotsrunning at an angle to the radii thereof, through which project pointsfrom the clamps D, whereby said clamps, as said disk is turned, arecaused to move toward and from a common center, in combination with thelever K and means, substantially as described, for operating the same,substantially as specified, and for the purposes as set forth.

4. The combination, in a machine for formin g circumferential crimps insheet-metal pipes, of a horizontal shaft having a cam-wheel and adaptedto revolve intermittently, a vertical shaft having a vertically-movingsleeve thereon, with which (or an an ti-friction truck thereon') saidcam-wheel will engage, a toggle-joint mechanism, means for connectingsaid sleeve and said mechanism when they are some distance apart, and aset of revolving formers or crimping-wheels adapted to be expanded fromeach other by said toggle-joint mechanism, substantially as set forth.

5. The combination,with the crimping-wheelexpanding mechanism of amachine for form- IIS 7. The combination of the clamping mechanism of amachine for forming circumferential crimps in sheet-metal pipes, theshaft whereby said mechanism is driven, the clutch parts J J, thespring-bolt j, which is the means of engagementbetween said two parts, alever, J for withdrawingsaid bolt, and a detent, b, for operating saidlever, substantially as set forth.

8. The combination with the adjustable segments f, of the inside sleeve,f, and cone shaped nut f whereby said segments can be expanded and thesize of the working portion of the inside clamp or rest, F, thusincreased to compensate for the wear incident to its use or varied toaccommodate variationsin the size of the pipe to be operated upon,substantially as set forth.

9. The combination, with the ring 0 upon which the pipe section restswhile in the machine, of the adjustable brackets G, which sustain saidring, and by which the position thereof can be varied, substantially assetforth.

In witness whereof I have hereunto set my hand and seal at Indianapolis,Indiana, this 12th day of November, A. D. 1881.

WILLIAM A. WHEELER. s.]

In presence of O. BRADFORD,

O. L. THURBER.

